SUSPECTED FAULT IN FRONT RIGHT SUSPENSION

2000 Mercedes Benz E220 • 4 cylinder 2WD • 414,503 miles

The car: Mercedes-Benz E220 CDI built in the year of 2000.
The issue: I was driving, and noticed a squeak in the front right suspension. It is only showing when driving over rough surfaces with the tire in question. The car itself sits lower on the suspension, than it does in the opposite side. I know it is more than usual. Is this a broken spring, or loss of pressure in the suspension?
When turning right, the rear of the car felt like it was "wobbling" on the rear tires/suspension. Other then that, the car feels normal to drive on flat surfaces.